Improvement in presses for perforating shoe-tips



2 Sheets-Sheet 1.

QM P I T N 0% S PM MM A TP SE n B 0 BF S S E R P No. 105,382. PatentedJuly 12, 1870 2 Sheets--Sheet 2.

E. B. STIMPSON. PRESS FOR PREPARING SHOE TIPS.

Patented July 1-2, 1870.

ITED STATES ED IN B. STIMPSON,

PATENT OFFICE.

OF NEW YORK, N. Y.

iMPRoVEMENrfm IPRE'S'SIESFOR PERFORATIING SHOE-TIPS,

Specification forming part-of Letters Patent No. 105,382, dated July12,1870.

To all whom it mag concern.- l ,Be it known that LvEnwm B. STIMPSON,ofythe city, county, and State of New York,have invented a newandusefulImprovement in Presses for the Perforation of Shoe-Tips and otherArticles, of which the following is a full,

clear, and exact description, referencebeing had tothe accompanyingdrawings, forming part of this specificatioinand in which-- Figure 1represents:a front'elevation of my improved press; 'Fig. 2,apartly-sectional side elevation thereof; Fig, 3, a horizontal sectionthrough the plunger portion of the press, taken as indicated by the linea: m in Fig. 2; and Fig.

i a 4 ai'urtherhori zon tal section, taken as denoted by'the line 3 3 lSimilar letters'wof reference indicate corre sponding parts.

My in vention has reference to presses for the perforation of shoe.-tips and other parts of shoesfor other articles; and it consists innovel means forholding or backing the punches.

Referring to theaccompanyingdrawings, A-

gepresents thefiframe of the, press, and B its ,edrm, i G is the stem orbody of the plunger, and i D thelever by which it isoperated through aneccentric, a, andlink-motion b.

Ois a lower flange orjplate portion cast on the plunger for the purposeof carrying'in a steadyand secure manner the punch-holder E, which isalso: of plate form, and is] held by screws ff to the flange 0, To avoidmaking this flan ge Q and the steinO' in separate pieces, which would benecessary where the plunger entered from above through the socket inwhich thestem works,-Ienter the same through the bed B of the press, towhich end said bed is formed with a hole, d, through it, of sufficientsize to allow of the flange C, as well as the stem (3, being passed upthrough it, and this hole I covcrwith a steel die-plate, 1*, havingperforations in it for the punches e to enter. after their passagethrough the leather or matcrial being worked. Thesepunches e are of anyrequired size and number, and arranged to form an y particular pattern,the holes in the fldie-plate being madeandfarranged to correspond,accordingto the ornamental configuration it is required to give the'tiporpert'orations therein. Said punches. c are secured to i i the holder Eby being driven into or through it from below, and are backed'at theirtops by a steel plate, G, which is interposed between the flange G andthe holder, and which serves to prevent the upper ends of thepunchesfrom sinkiu gor being worked by the punching action of the press intothe'softer cast-iron of the flange G. The screws ff serve to secure theholder E and steel plate G to the flange 0'.

- H isaplate-puuch.stripper arranged ata suitable height, as regulatedby washers g g. above,

the die-plate F, to allow of theint-roduction of the leather beingworked over the latter. This plate-stripper is perforated to correspondwith the punches, and to allow of the free passage of the sametherethrough. It is arranged to extend across orover the die-plate, andbeing made of a thin steel plate secured at its ends by screws 0 c,which hold it and the die-plate to the bed, is necessarily elastic; butas it is important to prevent any binding action on the punches, that itshould not spring, I stay it a on opposite sides, at or near the middleof the length, by a pin, I,in front screwed into the frame, and a pin,I, in rear secured to said stripper, andhearing at its upper end underthe socket portion of the main frame.

The'stemO of :the plunger is made round, whichis a much easier shape toestablish a truefit of it and the socket in which it slides than is asquare form; but as in working a series of small punches extending overa large area, as is the case here, it is very important that thereshould be no turning or deviation in any way from a. straight course ofthe plunger-stem. To counteract any possible failure in this respect asdue, to the round shape of the stem, I steady and guide the plunger atdistaut points on opposite sides by means of pin projections K K from orat the ends of the holder E, said pins playing, as the plunger isreciprocated, through holes 8 s in the stripper

